[go: up one dir, main page]

WO2000052769A1 - Actionneur piezoelectrique - Google Patents

Actionneur piezoelectrique Download PDF

Info

Publication number
WO2000052769A1
WO2000052769A1 PCT/DE2000/000121 DE0000121W WO0052769A1 WO 2000052769 A1 WO2000052769 A1 WO 2000052769A1 DE 0000121 W DE0000121 W DE 0000121W WO 0052769 A1 WO0052769 A1 WO 0052769A1
Authority
WO
WIPO (PCT)
Prior art keywords
common electrode
piezoelectric actuator
electrode tracks
cover layer
piezoelectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2000/000121
Other languages
German (de)
English (en)
Inventor
Rudolf Heinz
Friedrich Boecking
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to JP2000603104A priority Critical patent/JP2002538628A/ja
Priority to EP00907428A priority patent/EP1076917A1/fr
Priority to US09/674,772 priority patent/US6414418B1/en
Publication of WO2000052769A1 publication Critical patent/WO2000052769A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals
    • H10N30/875—Further connection or lead arrangements, e.g. flexible wiring boards, terminal pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators

Definitions

  • the invention is based on a piezoelectric actuator, in particular for actuating control valves or injection valves in motor vehicles, with an actuator body in the form of a multi-layer laminate of layers of piezoelectric material stacked on top of one another and metallic or electrically conductive layers in between, serving as electrodes, which alternate through on the Common electrode paths lying in the longitudinal direction of the actuator body are contacted and with electrical connection conductors which are in electrical contact with the common electrode paths in order to supply the piezoelectric actuator with operating voltage.
  • Such a piezoelectric actuator is such. B. from DE 196 50 900 AI of Robert Bosch GmbH known.
  • Such piezoelectric multi-layer actuators perform, when they are subjected to a pulsating electrical voltage at their electrode layers, analogous pulsating strokes, changing the distance between their two end faces.
  • the to the control or injection valve facing end has a plunger-like element that transmits the actuator stroke to the valve.
  • the piezoelectric actuator is connected in the active area of the actuator body.
  • the electrode tracks which transmit the electrical voltage to the electrode layers and which lie on both sides of the actuator body cover the full length of the active region of the actuator body, and the disadvantage arises that the electrical ones
  • Connection conductors must participate in the stroke of the actuator.
  • contacting the same with the common electrode tracks is problematic, since such contact made by a solder connection tends to form cracks during operation of the actuator.
  • a generic piezoelectric actuator is to be designed in such a way that reliable contacting of the connecting conductors with the common electrode tracks is achieved over the life of the piezoelectric actuator or the valve equipped with it, and at the same time the usual soldered connections can be replaced by clamp connections.
  • the essence of the invention is to remove the contacting of the connection conductors with the common electrode tracks from the active area of the piezoelectric actuator.
  • the actuator body has a cover layer made of piezo-inactive ceramic material on at least one end side opposite the valve side, and in that the
  • Connection conductors only in the area of this cover layer are electrically contacted with the common electrode tracks.
  • the piezoelectric actuator body can of course also have a piezo-inactive cover layer on its valve-side end face.
  • connection conductors with the common electrode tracks lies in the region of the piezo-inactive cover layer of the actuator body, which is not subject to the actuator stroke, means that there are no longer any connections in the active region of the piezoelectric actuator, and crack formation at soldering points and contact problems during its operation are avoided.
  • the common electrode tracks are in contact with the connection conductors on the jacket side of the cover layer.
  • the common electrode tracks are guided up to the end face of the cover layer and are there in contact with the connection conductors.
  • Connection leads can either be soldered or clamped.
  • connection conductors with the common electrode tracks on the piezo-inactive Cover layer in contact diametrically opposed to each other. This applies both to piezoelectric actuators with a circular cross section and to those with a rectangular or square cross section.
  • FIG. 1 schematically shows part of a longitudinal section through a piezoelectric actuator designed according to a first exemplary embodiment
  • Figure 2 shows in the same view a second embodiment of a piezoelectric actuator according to the invention.
  • FIG. 1 shows, in the form of a broken longitudinal section, a first exemplary embodiment of a piezoelectric actuator, which has an actuator body 10 in the form of a multi-layer laminate composed of layers of piezoelectric material 11 and layers lying between them metallic or electrically conductive layers 12, 13 serving as electrodes, which are alternately electrically contacted by common electrode tracks 14, 15 lying in the longitudinal direction on the jacket side of the actuator body and are shown broken off)
  • an actuator body 10 in the form of a multi-layer laminate composed of layers of piezoelectric material 11 and layers lying between them metallic or electrically conductive layers 12, 13 serving as electrodes, which are alternately electrically contacted by common electrode tracks 14, 15 lying in the longitudinal direction on the jacket side of the actuator body and are shown broken off
  • the common electrode tracks 14, 15 lie on diametrically opposite sides on the outer surface of the piezoelectric actuator body 10, where the alternating electrode layers 12 and 13 are alternately exposed on the outer surface of the actuator body 10.
  • the electrode tracks 14 and 15 can have a different shape than that shown in FIG. 1 and here have, for example only, the shape of straight, flat strips or webs in the axial direction of the actuator body 10.
  • the actuator body 10 has on its (upper in the figure 1)
  • connection conductors 16 and 17 are in electrical contact with the electrode tracks 14 and 15 only in the area of this cover layer 18.
  • the contact points of the connection conductors 16 and 17 with the common electrode tracks 14, 15 lie on the outer surface of the cover layer 18.
  • Each connection conductor 16 and 17 can either be soldered to the respective common electrode track 14 and 15 or connected with a clamp connection. Of course, one of the connection conductors 16 or 17 can also be soldered and the other clamped.
  • a clamped contacting of the common electrode tracks with the connection conductors 16 and 17 is also advantageous with the tensioning of the actuator body.
  • a piezoelectric multi-layer actuator as described here must be installed under a mechanical pretension, since otherwise it would tear apart when actuated.
  • the mechanical prestress is applied to the end faces of the actuator body 10 by suitable prestressing members (not shown), so that the actuator strokes are carried out on the end face facing the valve, not shown in the figures, against the prestress applied by the prestressing members.
  • the end face of the actuator body 10 facing the valve can also have a piezo-inactive cover layer, similar to the cover layer 18.
  • the contact points of the connecting conductors 16, 17 can be provided both on the jacket surface and on the end face 9 of the cover layer 18, which means a combination of the exemplary embodiments according to FIGS. 1 and 2.
  • the piezoelectric actuator described above by way of example with reference to FIGS. 1 and 2 offers simple and reliable contacting with high fatigue strength and little tendency to form cracks in the contacting solder over the life of the actuator, since the contacting of the common electrode tracks with the voltage-supplying connection conductors made of the piezoactive Area of the actuator is removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne un actionneur piézoélectrique, servant notamment à actionner des soupapes de commande ou des soupapes d'injection dans des véhicules automobiles. Cet actionneur présente un corps (10) se présentant sous la forme d'un stratifié multicouche constitué de couches superposées de matériau piézoélectrique (11) et de couches intermédiaires (12, 13), métalliques et électroconductrices, servant d'électrodes, qui sont mises en contact en alternance par des pistes d'électrodes communes (14,15) situées sur le côté extérieur dans le sens longitudinal du corps d'actionneur (10). L'actionneur présente également des conducteurs d'alimentation électriques (16, 17) qui sont chacun en contact électrique avec les pistes d'électrodes communes (14, 15) pour acheminer la tension de service audit actionneur piézoélectrique (10). Le corps d'actionneur (10) présente, sur au moins un côté frontal (9) opposé au côté soupape, une couche de recouvrement (18) constituée d'un matériau céramique piézo-inactif, et les conducteurs d'alimentation (16, 17) sont chacun en contact avec les pistes d'électrode communes (14, 15) uniquement dans la zone de cette couche de recouvrement (18).
PCT/DE2000/000121 1999-03-04 2000-01-14 Actionneur piezoelectrique Ceased WO2000052769A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000603104A JP2002538628A (ja) 1999-03-04 2000-01-14 圧電式のアクチュエータ
EP00907428A EP1076917A1 (fr) 1999-03-04 2000-01-14 Actionneur piezoelectrique
US09/674,772 US6414418B1 (en) 1999-03-04 2000-01-14 Piezoelectric actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909452A DE19909452C1 (de) 1999-03-04 1999-03-04 Piezoelektrischer Aktor
DE19909452.7 1999-03-04

Publications (1)

Publication Number Publication Date
WO2000052769A1 true WO2000052769A1 (fr) 2000-09-08

Family

ID=7899653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/000121 Ceased WO2000052769A1 (fr) 1999-03-04 2000-01-14 Actionneur piezoelectrique

Country Status (6)

Country Link
US (1) US6414418B1 (fr)
EP (1) EP1076917A1 (fr)
JP (1) JP2002538628A (fr)
KR (1) KR100694523B1 (fr)
DE (1) DE19909452C1 (fr)
WO (1) WO2000052769A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373650C (zh) * 2001-04-30 2008-03-05 埃普科斯股份有限公司 用于电气部件的钝化材料及多层结构的压电部件
WO2010092170A1 (fr) * 2009-02-16 2010-08-19 Continental Automotive Gmbh Actionneur piézoélectrique, procédé de production de l'actionneur et injecteur

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10026005B4 (de) * 2000-05-25 2004-07-08 Robert Bosch Gmbh Piezoaktor
DE10039218A1 (de) * 2000-08-11 2002-02-28 Bosch Gmbh Robert Piezoelektrische Aktuatoranordnung, inbesondere zur Betätigung eines Ventils in einem Kraftfahrzeug
US6515403B1 (en) * 2001-07-23 2003-02-04 Honeywell International Inc. Co-fired piezo driver and method of making for a ring laser gyroscope
US20030020377A1 (en) * 2001-07-30 2003-01-30 Ngk Insulators, Ltd. Piezoelectric/electrostrictive element and piezoelectric/electrostrictive device and production method thereof
US6965189B2 (en) * 2002-09-20 2005-11-15 Monodrive Inc. Bending actuators and sensors constructed from shaped active materials and methods for making the same
KR100587583B1 (ko) * 2004-01-08 2006-06-08 학교법인 건국대학교 적층형 세라믹 박판 작동층을 갖는 압전세라믹의 압전작동기 구조의 제조방법
DE102005018322B4 (de) * 2005-04-20 2007-03-08 Siemens Ag Piezoaktor und Verfahren zu seiner Herstellung
DE102006032994A1 (de) * 2006-07-17 2008-01-31 Siemens Ag Elektromechanischer Motor
DE102007009874A1 (de) * 2007-02-28 2008-09-04 Physik Instrumente (Pi) Gmbh & Co. Kg Linearer Ultraschall-Piezomotor
US20100308693A1 (en) * 2009-06-04 2010-12-09 Phillips James R Piezoelectric Stack Actuator Assembly
DE102010054589A1 (de) * 2010-12-15 2012-06-21 Epcos Ag Piezoaktuator mit Schutz vor Einflüssen der Umgebung
WO2015122996A1 (fr) * 2014-01-17 2015-08-20 Mcalister Technologies, Llc Actionneur piézo-électrique commandé de manière adaptative
EP3179527B1 (fr) * 2015-12-07 2020-02-19 Danfoss A/S Transducteur avec des connecteurs soudés sur celui-ci

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272984A (ja) * 1985-05-28 1986-12-03 Nec Corp 電歪効果素子
US4803763A (en) * 1986-08-28 1989-02-14 Nippon Soken, Inc. Method of making a laminated piezoelectric transducer
US4814659A (en) * 1987-02-23 1989-03-21 Toyota Jidosha Kabushiki Kaisha Variable cross-section piezoelectric actuator
JPH07226544A (ja) * 1994-02-10 1995-08-22 Nippondenso Co Ltd 積層型圧電体
DE19650900A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Piezoelektrischer Aktuator

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418980A (en) * 1965-09-01 1968-12-31 Physics Internat Company Fuel injector-ignitor system for internal combustion engines
US3598506A (en) * 1969-04-23 1971-08-10 Physics Int Co Electrostrictive actuator
US4011474A (en) * 1974-10-03 1977-03-08 Pz Technology, Inc. Piezoelectric stack insulation
US4471256A (en) * 1982-06-14 1984-09-11 Nippon Soken, Inc. Piezoelectric actuator, and valve apparatus having actuator
US4533059A (en) * 1984-06-13 1985-08-06 Continental White Cap, Inc. Vacuum-tamper indicating button for smaller diameter caps and the like
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
JP2567046B2 (ja) * 1987-09-25 1996-12-25 日立金属株式会社 積層型変位素子
US4995587A (en) * 1989-11-03 1991-02-26 Martin Marietta Corporation Motion amplifier employing a dual piston arrangement
JPH05236764A (ja) * 1991-12-04 1993-09-10 Tokin Corp 圧電アクチュエ−タの駆動用電源装置
US5218259A (en) * 1992-02-18 1993-06-08 Caterpillar Inc. Coating surrounding a piezoelectric solid state motor stack
JP3286949B2 (ja) * 1993-03-30 2002-05-27 株式会社トーキン 積層型圧電アクチュエータの製造方法
JPH07154005A (ja) * 1993-11-29 1995-06-16 Tokin Corp 積層型電歪アクチュエータ
JP2000252537A (ja) * 1999-02-26 2000-09-14 Tokin Ceramics Corp 積層型圧電セラミック
JP2000323766A (ja) * 1999-05-14 2000-11-24 Toyota Motor Corp 圧電アクチュエータ
JP2001069771A (ja) * 1999-08-31 2001-03-16 Kyocera Corp 積層型圧電アクチュエータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272984A (ja) * 1985-05-28 1986-12-03 Nec Corp 電歪効果素子
US4803763A (en) * 1986-08-28 1989-02-14 Nippon Soken, Inc. Method of making a laminated piezoelectric transducer
US4814659A (en) * 1987-02-23 1989-03-21 Toyota Jidosha Kabushiki Kaisha Variable cross-section piezoelectric actuator
JPH07226544A (ja) * 1994-02-10 1995-08-22 Nippondenso Co Ltd 積層型圧電体
DE19650900A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Piezoelektrischer Aktuator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 127 (E - 501) 21 April 1987 (1987-04-21) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373650C (zh) * 2001-04-30 2008-03-05 埃普科斯股份有限公司 用于电气部件的钝化材料及多层结构的压电部件
WO2010092170A1 (fr) * 2009-02-16 2010-08-19 Continental Automotive Gmbh Actionneur piézoélectrique, procédé de production de l'actionneur et injecteur
DE102009009164B4 (de) * 2009-02-16 2014-10-02 Continental Automotive Gmbh Piezoelektrischer Aktor, Verfahren zur Herstellung des Aktors und Injektor

Also Published As

Publication number Publication date
JP2002538628A (ja) 2002-11-12
DE19909452C1 (de) 2000-03-23
KR20010043243A (ko) 2001-05-25
KR100694523B1 (ko) 2007-03-13
US6414418B1 (en) 2002-07-02
EP1076917A1 (fr) 2001-02-21

Similar Documents

Publication Publication Date Title
EP1110249B1 (fr) Actionneur piezo-electrique a raccordements d'electrodes ameliores
EP1090431B1 (fr) Actionneur piezoelectrique
EP1636859B1 (fr) Element piezoelectrique avec un point de rupture prevu, methode de production de l'element, et utilisation de l'element
DE19909452C1 (de) Piezoelektrischer Aktor
EP1230688A1 (fr) Actionneur piezo
EP2136418B1 (fr) Actionneur de pliage ou capteur de pliage et procédé de fabrication pour un actionneur de pliage ou un capteur de pliage
DE19945933C1 (de) Piezoaktor mit isolationszonenfreier elektrischer Kontaktierung und Verfahren zu dessen Herstellung
EP1110250A1 (fr) Actionneur piezo-electrique dote d'une electrode exterieure adaptee a la dilatation thermique
EP1579515B1 (fr) Piézo-actionneur
DE10236986A1 (de) Piezoaktor
EP1579514A1 (fr) Piezo-actionneur et son procede de production
EP2456970A1 (fr) Piézoactionneur avec contacts électriques
EP2984689B1 (fr) Dispositif actionneur piézo-électrique et valve ainsi équipé
EP2332192B1 (fr) Actionneur piézoélectrique comprenant une électrode extérieure
WO2001024286A1 (fr) Actionneur piezo-electrique
DE10201943A1 (de) Vielschichtaktor mit versetzt angeordneten Kontaktflächen gleich gepolter Innenelektroden für ihre Außenelektrode
DE102010042969A1 (de) Piezoelektrisches Bauteil mit Kontaktierung
WO2004019424A2 (fr) Actionneur piezoelectrique
WO2001089002A1 (fr) Actionneur piezo-electrique
DE19928180B4 (de) Piezoaktor
DE10243996B4 (de) Mehrschichtiges Mikroventil mit elektrostatischem Antrieb
EP1724849A2 (fr) Élément piézo-électrique
DE102004005944A1 (de) Elektrisches Anschlusselement, elektrisches Bauteil mit dem Anschlusselement und Verwendung des Bauteils
WO2015082399A1 (fr) Actionneur piézo-électrique et soupape de commande équipé d'un tel actionneur piézo-électrique

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 2000907428

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1020007012187

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 09674772

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 2000907428

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020007012187

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1020007012187

Country of ref document: KR